Gas-compressing machine.



No. 665,959. Patented lan.|5, |901.

GAS CMPRESSING MACHINE.

{Applicmun nien res.' 1s, Issa) (No Model.)

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NITED STATES 4PATENT OFFICE.

SAMUEL D. FLOOD, OF CHICAGO, ILLINOIS, ASSIGNOR TO 'll-lE A. H. BARBER &

COMPANY, OF SAME PLACE.

lGAS-COMPRESSING MACHINE.

SPECIFICATION forming` part of Letters Patent N o. 665,959, dated January 15, 190,1.

Application filed February 18, 1898. Serial No. 670,758. (No model.)

To all whom it may Concern: i l. Fig. 3 is a portion of a horizontal section Be it known thatI, SAMUEL D. FLOOD, aciti' taken on line 3 3 in Fig. l. 5 zen of the United States ofAmerica,anda resi- In the machine a portion of which I have dent of Chicago, county of Cook,and State of illustrated the reciprocating piston Ais recip- 5 Illinois, haveinvented certain new and useful rocated Within the piston-cylinder B,through 55 Improvementsin Gas-Compressing Machines, the medium of a suitable piston-rod C,by any of which the followingis a specification. suitable power mechanism. This could of My invention relates generally to gas-comcourse be a steam-engine or a crank or any pressing machines, and particularly to a gasother well-known form of device for produc- 1o compressing machine designed more espeingareciprocating motion. The heads land 6o cially for colnpressing exceedingly tenuous 2 of the piston-cylinder B are bolted to the and penetrating gases, such as ammonia, and latter by means of suitable bolts 3 3, extendinvolving in its construction a cylindrical ing through the heads and into the ends or piston-chamber and a piston reciprocating into suitable ears 4 4, formed at the ends of x5 therein and operating to compress the gas, the piston-cylinder. These heads 1 and 2 65 a gas suction and discharge valve arranged could be joined to the ends of the piston-cylat each end of the piston-cylinder and adaptinder in any desirable way and could be ed to permit the gas to be admitted to and packed so as to prevent to a greater or less discharged from the opposite ends of the cylextent the escape of the gas from the pistonzo inder in alternation, and a water-jacket surchamber also in any desirable way. Asa mat- 7o rounding the piston-cylinder and providing ter of further improvement, however, they ajacket-chamberin which water can be conare joined to the ends of the cylinder by fined or circulated, so as to prevent the heatmeans of annular ribs or beads 5, extending ing of the piston-cylinder and the gas while inwardly from their inner surfaces and fitting 25 the latter is undergoing compression. in annularrecesses in the ends of the cylinder. 75 The prominent objects of my invention are Between the inner faces of the beads 5 and to absolutely prevent leakage of the gas'from the annular recesses in which they fit are arthe piston-chamber; to permit the use, operranged packing-rings 6, which t closely into ation, and handling of the machine by unannular recesses and are compressed therein 3o skilled and ignorant persons unfamiliar with by the pressure exerted upon them in secur- 8o machinery without injurious results to the ing the heads l and 2 to the ends of the cylmachine; to secure the maximum cooling inder. This construction provides an exceedeffect possible by the use of water-jackets; ingly simple and highlyefficientarrangement to permit the removal, repair, and replacefor iitting the heads 1 andi to the ends of the 35 ment of the valves without having to precylinder and at the same time practically pre- 85 liminarily remove the water-jacket casing or vents absolutely any escape of the gas from otherwise dismember the machine to any conthe piston-chamber provided by the pistonsiderable extent; to provide novel features cylinder B. of construction tending to increase the ef- The piston-rod C is packed by means of pack- 4o iciency and utility'of compressing-machines, ing '7, which is arranged in a suitable stuff- 9c and to secure the above results in a practical, ing-box 8, formed integral with and extendinexpensive, and simple manner. ing outwardly from the cylinder-head l and 'Io the attainment of the foregoing and is held therein by a gland 9, which fits into other desirable ends my invention consists the bore of the stuffing-box 8 and is secured 45 in matters hereinafter fully set forth. t in position by bolts 10. 95

In the following drawings, Figure l is a The ammonia or other gas which is comvertical section taken centrally through the pressed by the machine is admitted to and piston-cylinder of a gas-compressing machine discharged from the opposite ends of the cylembodying my invention. Fig. 2 is a transinder in alternation by suitable valves, which 5o verse vertical section taken on line 2 2 in Fig. are arranged and adapted to allow it to be 10o drawn into one end while itis being discharged from the other, and vice versa. l4

could employ any suit-able form of suction and discharge valve for this purpose.v The valves shown in the drawings are of a simple and yeicientconstruction3 but they form no`r part of my present invention. shown merely to illustrate a complete and operative machine. It will he observed that although Fig. 3 is a section of but one-half of the cylinder it will be understood that the They `are p valves at the opposite end are identical with those shown inthis figure.. discharge valve is arranged at each end of the cylinder on either side of a median longitudinal line. The suction-valve D involves an outwardly-tapered or conical valve proper, 11, which -is seated upon a correspondinglytapered or conical valve-seat 12 and is capable of being reciprocated or lifted Afrom its seat in a directioninto the end of the cylinder, so as to allow ythe gas to pass into the `latter when the piston is receding from it.`

The valve 11v is held normally against its seat 12 by a compression-'spring 13, which incloses a spindle 14, carrying the valve 11, and which has one of its ends acting against a seat 15 aud the other acting against the shoulder formed by a head 16 at the outer end of the spindle 14. In order to prevent the head 16 from working loose or becoming detached from the spindle 14, itis made integral therewith, in which way the possibility of the valve 11 working into the piston-chamber and interfering with the piston, and thereby causing a breakage of the machine, is absolutely prevented. This inwardly opening lvalve mechanism is confined and operates within a valve-chamber provided by a substantially cylindrical valve-casing 17, which is desirably I from the cylinder-head I.

In order to permit the bodily removal of made integral with and extends outwardly;

the valve 11 and its cooperating parts, so as to Vpermit the repairing or replacement thereof without necessitating the removal of the cylinder-head I, the valve-seat 12 for the valve l 1l is provided by a bodily-removable collar 18, which is tted in the forward end of the valve-casing 17. This removable collar 18 is held normally in position at the forwardend of the valve-casing by means of a slee-ve or cage 19, which fits against the rear face of the collar 18 and is provided with longitudii nal slots 20, which allow the ammonia or other gas to pass into the interior of the valvein g `detached'therei rom. This-sleeve 22 is in turn held -inp'os'ition by a threaded `nut 23, which is screwed into the valve-casing 17, so as to fit against the rear face of the sleeve 22, and which has a bore adapted to permit the :head 16 on the spindle 14 to work therein. It isi-n tu r-n held in place by a threaded plug 24, whichscrews into the outer end of the valve-casing 17and has its forward end fitted .against a shoulder formed in the threaded nut 23.

The discharge-valve mechanism E involves an outwardly `flared or tapered valve proper, 2.5, which fits against a correspondingly dared or tapered conical valve-seat 26, in which way the valve camopen outwardly or away from the cylinder, so Yas to permit the ammonia or other gas to be-discharged from the latter when Athe piston is moving ytoward it. The valve 25 is held normally against its valve-seat 26 by a compression-spring 27, whose forward end acts against a seat 29, formed at the rear of the valve 25, and whose rear end acts against a seat 28, formed near the rear-of a spl'it'sleeve 22a, which incloses the valve-spindle 142.` The valve-seat 26 is provided by a removable collar 18a, positioned at lthe forward end of the valve-chamber. The collar 18a is held in position by a slotted sleeve 19, a split sleeve 22a, a threaded nut 23, and a threaded plug 24.v

Ammonia or the like is admitted to the valvechamher provided by the valve-casing 17 by way of a port 30 and is discharged from the valve-chamber provided by the valve-casing 17a by way of the port 30a. These ports 30 and 30a extend upwardly and outwardly from the valve-casings 17 and 17a and thence upwardly to points above the top of the cylinder B and are desirably made integral with the cylinder-head I. Ammonia is admitted to the port 30 and to the corresponding port for a similar valve at the other `end of the cylinderby au inlet-pipe31 and is discharged from the port 30 and from a corresponding TOO IIO

port at the' opposite end of the cylinder by an outlet or discharge pipe. (Not shown in the drawings, but corresponding to the inletpipe 31.) The inlet-pipe 31 and the outlet-pipe similar thereto extend longitudinally above the cylinder and have their ends bolted to the upper ends of the inlet and outlet ports 30 and 30, respectively, it being understood that the suction and discharge valves at the end of the cylinder, but not shown in the drawings, are on the same sides thereof as the valves D and E, in which way the inlet and outlet pipes extend parallel to one another on opposite sides of the cylinder. The inlet-pipe 31 receives ammonia or like gas by way of a single orifice 32, arranged at its longitudinal middle and provided with a flange by which it can be connected with a suitable supply-pipe. The discharge-pipe is similarly constructed, so that it can be connected with a suitable exhaust-pipe. As a matter of further improvement practically the entire gascontaining mechanism is completely waterjacketed. As a simple arrangement the cylinder B 'is surrounded by a cylindrical casing F, which provides between itself and the outside ofthe cylinder a jacket-chamber Gr. This casingF is held in position outside ofthe cylinder B by means of laterallyextendingwebs 34E, which also provide portions into which the bolts 3 3 can be screwed.

The cylinder surrounding casing F is, in effect, extended longitudinally in both directions by cylindrical danges 36, made integral with the cylinder-heads l and 2 and adapted to fit against the opposite ends of the casing F. Jacketheads 37 37 are fitted to the outer en ds of the flanges 36 36 and are held in place thereagainst by suitable screws. These heads 37 37 fit closely against the ends of the valvecasings 17 and 17a and are provided with suitable threaded holes, into which the threaded plugs 24 24 can be screwed. It will be seen that by this construction the machine is provided with a j acket-casing which contains all of its gas chambers-that is to say, the compression-chamber and valve-chambers and the ends of the ports leading theretoand which provides a jacket-chamber that completely surrounds the compression-chamber. It will be further seen that the valvechambers are accessible from outside of the jacket-casing when the latter is in place, in which way the valve mechanisms can be bodily removed from their chambers without necessitating,r a preliminary removal of the jacket-casing.

What I claim isl. The combination with a cylinder and the heads thereof; of a circumferentially -arranged jacket extending beyond and inclosing both ends of the cylinder and provided with jacket-heads; valve-casings arranged in the end portions of the jacket and extending between the cylinder-heads and the jacketheads; devices, such as caps, extending through the jacket-heads and fit-ting the ends of the valve-casings; and ports extending from the valve-casings to and through the jacket.

2. The combination with the cylinder and the cylinder-heads therefor, of a jacket surrounding the same, and constructed with detachable jacket-heads; valve-casings made integral with the cylinder-heads, and extending substantially to the jacket-heads; and caps fitted within apertures in the jacketheads, and also into the out-er ends of the valve-casings.

Signed by me at Chicago, Illinois, this 16th day of February, 1898.

SAMUEL D. FLOOD. 

